<?php
namespace FedEx\Utility\CodeGenerator;

/**
 * Abstract class for code generation utilities
 *
 * @author      Jeremy Dunn <jeremy@jsdunn.info>
 * @package     PHP FedEx API wrapper
 * @subpackage  Utilities
 */
abstract class AbstractGenerate
{
    /**
     * SimpleXMLElement
     *
     * @var \SimpleXMLElement
     */
    protected $xml;

    /**
     * Path to WSDL file
     *
     * @var string
     */
    protected $wsdlPath;

    /**
     * Export path
     *
     * @var string
     */
    protected $exportPath;

    /**
     * Namespace name
     *
     * @var string
     */
    protected $namespace;

    /**
     * Subpackage name
     *
     * @var string
     */
    protected $subPackageName;

    /**
     * Constructor
     *
     * @param string $exportPath Path to export ComplexType classes
     * @param string $wsdlPath Path to .wsdl file
     * @param string $namespace base Namespace name (eg: FedEx\RateService).
     * @param string $subPackageName Sub package the generated class belongs to (used in DocBlock)
     * @throws \Exception
     */
    public function __construct($exportPath, $wsdlPath, $namespace, $subPackageName)
    {
        if (file_exists($wsdlPath)) {
            $this->wsdlPath = $wsdlPath;
        } else {
            throw new \Exception('path to wsdl file is invalid');
        }

        if ($this->createDirectory($exportPath)) {
            $this->exportPath = $exportPath;
        } else {
            throw new \Exception('cannot write to export path');
        }

        $this->namespace = $namespace;
        $this->subPackageName = $subPackageName;
        $this->loadXML();
    }

    /**
     * Parses the xml file as a SimpleXMLElement
     *
     */
    protected function loadXML()
    {
        $fileContents = file_get_contents($this->wsdlPath);
        $fileContents = str_replace('xs:', '', $fileContents);
        $this->xml = new \SimpleXMLElement($fileContents);
    }

    /**
     * @param $path
     *
     * @return bool
     */
    protected function createDirectory($path)
    {
        if (!is_writable($path) && !is_dir($path)) {
            mkdir($path);
        }

        return is_writable($path);
    }

    /**
     * Run Generator
     */
    abstract public function run();
}